Twisting machinery.



No. 634,407.v Patented Oct. 3, I899. J., P. 81. N. FRASER. TWISTING MACHINERY.

(Application filed Doc. 20, 1897.)

(No Model.)

INVENTORG Jorm FRASER THE R R m-o rm EY s NITED STATES PATENT EEIcE.

JOHN FRASER, PATRICK FRASER, AND NORMAN FRASER, OF ARBROATH, SCOTLAND.

TWISTING MACHINERY.

SPECIFICATION forming part of Letters Patent No. 634,407, dated October 8, 1899.

' Application filed December 20, 1397. Serial No. 662,598. (No model.)

To all whom, it may concern:

Beit known that we, JOHN FRASER, PATRICK F ASER, and NORMAN FRASER, subjects of the Queen of Great Britain and Ireland, and residents of Arbroath, Scotland, have in vented certain Improvements in Twisting Machinery, (for which we have obtained aBritish Patent, No. 239, dated January 4., 1895,) of which the following is a specification.

Our said invention relates to twisting inachinery of the kind in which the yarns or threads to be twisted together are drawn through a guide-eye by mechanism arranged in connection with the flier, which twists them anddelivers them to the bobbin, upon which they are wound and our object is to provide, in connection with the guide-eye, mechanism which on a knot or other obstruction on the yarn meeting the guide-eye will act on the stop-motion mechanism of themachine and prevent breakage of the yarn. The guide-eye may consist of a hole formed in an otherwise-solid piece, as is usually the case, or it may be in two or more pieces, which by the action of a weight or equivalent are made to press uniformly on the passing yarn or thread notwithstanding inequalities in its thickness.

Figure 1 of the drawings is a horizontal section, and Fig. 2 is avertical section. Certain parts shown in Fig. 2 are for convenience not shown in Fig. 1.

In the drawings the same reference-letters are used to mark the same or like parts wherever they are repeated.

The part containing the guide-eye A is, according to the example shown in the drawings, formed in two pieces, onethe main body part B-having one half of the eye in it or at the inner end of a groove in a small part 0, fixed to it, while the other piece D is made with a tongue E, having the other half of the guide formed in its edge, the tongue projecting into the groove in the part 0 of the main body'part. The main body part B is in the form of a lever centered on a pin G, fixed in a bracket H on a vertical rod J, and is held up by an adjustable spring K. Pressure is applied to the movable piece D by a bellcrank lever L, acted on by an adjustable weight M, (or it might be a spring.) The lever L is centered on a pin N, fixed in aboss formed on the main body part B, and the movable-piece D is attached to it by a pin P. The bottom end of the eye A maybe slightly flared to suit the increased size of the combined yarns due to the twisting action. main body part B, forming the lever, is de pressed when a knot or other obstruction offers to pass through the guide-eye A and by a wire or rod Q moves a bell-crank catch R, supporting the stop-motion device S, out of the way and allows said device to drop to stop the action of the machine, and thereby prevent breakage of the yarn. This may be done by allowing the device S, on dropping, to shift the driving-cord T from the fast pulley U to the loose pulley W or in any other wellknown Way. The machine may be restarted by hand.

\Ve claim as our invention- I In twisting machinery, a lever containing a guide-eye in two parts, one movable with reference to the other, and means for pressing the two parts of the eye toward each other, in combination with a bracket to which said lever is pivoted, means to sustain the lever, a stop-motion device, a catch for the latter and means connecting the catch and lever, substantially as and for the purpose described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

JOHN FRASER.

PATRICK FRASER. NORMAN FRASER; Witnesses:

THOMAS DICK, DAVID KING.

The 

